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The term “hyperbaric” is taken from the prefix “hyper,” which means increased, and the suffix “baric,” which indicates pressure.

Of or pertaining to barium; as, baric oxide.

Other alkalies are calcic hydroxide or slaked lime, a solution of which in water is known as lime-water; baric hydroxide and strontic hydroxide, derived from the metals barium and strontium.

Once the children are initiated into it by the teacher, they blindfold their eyes and repeat by themselves these exercises of the baric sense.

The baric sulphate is filtered off and weighed.